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On Sat Jul 01, 2000 at 12:04:36PM -0400, Alexander Viro wrote:
>
> Try to trace the path from their roots to absolute root(s)... They simply
> should not be in the output - that's a debugging stuff and I have no
> problems with removing it from /proc/mounts. No heuristics needed - we
> can pass NULL as dev_name in kern_mount() and check for NULL ->mnt_devname
> in get_filesystem_info(). I'll do that as soon as threading patches will
> be over (hopefully RSN - they went to Linus).
>
Ok, cool. So something like then? I kept in the filter for FS_NOMOUNT
filesystems, as I assume those should never show up in /proc/mounts, and added
that filter to the /proc/filesystems listing as well.
-Erik
--
Erik B. Andersen Web: http://www.xmission.com/~andersen/
email: andersee@debian.org
--This message was written using 73% post-consumer electrons--
--- fs/super.c.virgin Wed Jun 28 22:42:35 2000
+++ fs/super.c Mon Jul 3 12:07:07 2000
@@ -251,6 +251,10 @@ int get_filesystem_list(char * buf)
read_lock(&file_systems_lock);
tmp = file_systems;
while (tmp && len < PAGE_SIZE - 80) {
+ /* Filter out any filesystems that are marked as FS_NOMOUNT.
+ * User space doesn't need to know or care about them */
+ if (tmp->fs_flags & FS_NOMOUNT)
+ continue;
len += sprintf(buf+len, "%s\t%s\n",
(tmp->fs_flags & FS_REQUIRES_DEV) ? "" : "nodev",
tmp->name);
@@ -443,6 +447,16 @@ int get_filesystem_info( char *buf )
path = d_path(tmp->mnt_root, tmp, buffer, PAGE_SIZE);
if (!path)
continue;
+ /* Filter out any filesystems that are marked as FS_NOMOUNT.
+ * User space doesn't need to know or care about them */
+ if (tmp->mnt_sb->s_type->fs_flags & FS_NOMOUNT)
+ continue;
+ /* kern_mount() allows the kernel to mount internal-use-only
+ * filesystems, and marks then with ->mnt_devname==NULL, so
+ * filter out those here */
+ if (tmp->mnt_devname == NULL)
+ continue;
+
len += sprintf( buf + len, "%s %s %s %s",
tmp->mnt_devname, path,
tmp->mnt_sb->s_type->name,
@@ -895,7 +909,7 @@ struct vfsmount *kern_mount(struct file_
put_unnamed_dev(dev);
return ERR_PTR(-EINVAL);
}
- mnt = add_vfsmnt(sb, sb->s_root, sb->s_root, NULL, "none", type->name);
+ mnt = add_vfsmnt(sb, sb->s_root, sb->s_root, NULL, NULL, type->name);
if (!mnt) {
kill_super(sb, 0);
return ERR_PTR(-ENOMEM);
-
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